Sonus
Networks, Inc. (Nasdaq: SONS), a global
leader in SIP communications, today released the results of a new
report indicating that the market outlook for enterprise Unified
Communications remains strong, fueled in part by enterprises equipped
with a higher degree of understanding about the technologies available,
potential applications and business gains.

The report, "Enterprises Place 2013 Unified Communications (News - Alert) Bets: How
Many Horses in This Race " was commissioned by Sonus and conducted
by the independent Webtorials Editorial and Analyst Division. Webtorials
surveyed more than 200 enterprise IT professionals to determine their
interest in Unified Communications, levels of deployment and drivers for
adoption, with a particular focus on Microsoft (News - Alert) Lync.

Key findings of the report include:

Seventy-eight percent of respondents had either partially or fully
deployed Unified Communications solutions; most of the remaining
respondents were or would soon be in the planning phase

Currently, 65 percent of Unified Communications deployments are
premises-based, but that number is expected to decline to 31 percent
as future deployments move more to the Cloud. Hybrid deployments are
the preferred approach to Unified Communications in the future.

Customer premises-based solutions for SBC functions are currently and
will continue to dominate, although a slight shift to hybrid with
solutions by service providers is expected as the reach of these
solutions becomes more all-encompassing. Regardless of how SBCs are
acquired, their role in UC deployments should bode well for
standards-based SBC manufacturers.

When asked about the most important factors in the selection of
Unified Communications suppliers, "enterprise voice" led the way,
followed by "unified messaging" and "mobile clients for smartphones
and tablets." Surprisingly, "desktop video conferencing" beat "room
size video conferencing" two to one, and "web conferencing" rounded
out the top five.

Going forward, it appears that Cisco (News - Alert) and Microsoft's shares of the
Unified Communications market will increase at the expense of the
other IP PBX vendors. Cisco held a clear lead for enterprise voice,
video teleconferencing and web meetings, while Mcrosoft was cited
more often for IM, presence and enterprise social functions like
internal corporate user profiles, directories and skills search.

Quotes:

"Unified Communications has clearly taken hold in the enterprise and it
continues to evolve," said Steve Taylor, editor-in-chief and publisher
for Webtorials. "There are new trends gaining traction, such as the
shift from room systems to desktop video, the growing focus on hybrid
clouds and changes in the positions of the lead horses or vendors. Since
there isn't a dominant vendor in the market, interoperability - both
within the enterprise and for intercompany communications - will be a
key factor."

"This latest Webtorials report provides great insight into the state of
the enterprise Unified Communications market, outlining the
opportunities and challenges that companies face as they implement
technologies that can help dramatically increase employee productivity
and customer satisfaction," said Wes Durow (News - Alert), vice president of global
marketing & go-to-market operations at Sonus. "As enterprise deployment
of Unified Communications grows, SBCs play an increasing critical role
in helping companies overcome interoperability, service quality and
security challenges often faced when implementing multi-vendor Internet
protocol (IP) networks."

Sonus helps the world's leading communications service providers and
enterprises embrace the next generation of SIP-based solutions including
VoIP, video and Unified Communications through secure, reliable and
scalable IP networks. With customers around the globe and 15 years of
experience transforming networks to IP, Sonus has enabled service
providers and enterprises to capture and retain users and generate
significant ROI. Sonus products include session border controllers,
policy/routing servers, subscriber feature servers and media and
signaling gateways. Sonus products are supported by a global services
team with experience in design, deployment and maintenance of some of
the world's largest and most complex IP networks. For more information,
visit www.sonus.net
or call 1-855-GO-SONUS.

Important Information Regarding Forward-Looking Statements:

The information in this release may contain certain forward-looking
statements within the meaning of the U.S. Private Securities Litigation
Reform Act of 1995 regarding future events that involve risks and
uncertainties. Although Sonus believes that its expectations are based
on reasonable assumptions, readers are cautioned that these
forward-looking statements are only predictions and are subject to
inherent uncertainties, risks and changes in circumstances that are
difficult to predict. All statements other than statements of historical
facts contained in this report are forward-looking statements. Our
actual results may differ materially from those contemplated by the
forward-looking statements. For further information regarding risks and
uncertainties associated with Sonus' business, please refer to the
"Management's Discussion and Analysis of Financial Condition and Results
of Operations" and "Risk Factors" sections of Sonus' filings with the
Securities and Exchange Commission. Any forward-looking statements
represent Sonus' views only as of the date on which such statement is
made, and should not be relied upon as representing Sonus' views as of
any subsequent date. While Sonus may elect to update forward-looking
statements at some point, Sonus specifically disclaims any obligation to
do so, except as required by law.